Răspunsuri

2014-06-01T19:15:57+03:00
X+y+z=138
x:5=y:6=z:7=(x+y+z):(5+6+7)=138:18=7,(6)
=>x=7,(6) x 5=..
=>y=7,(6) x 6=..
=> z=7,(6) x 7=..
Calculezi tu acolo ca e usor :D